linux-kernel - [PATCH RESEND 14/14] gpio: ge: use new generic GPIO chip API

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Message-Id: <20250812-gpio-mmio-gpio-conv-v1-14-aac41d656979@linaro.org>
Date: Tue, 12 Aug 2025 14:12:56 +0200
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Linus Walleij <linus.walleij@...aro.org>, 
 Bartosz Golaszewski <brgl@...ev.pl>, Yinbo Zhu <zhuyinbo@...ngson.cn>, 
 Hoan Tran <hoan@...amperecomputing.com>, 
 Manivannan Sadhasivam <mani@...nel.org>, Yang Shen <shenyang39@...wei.com>
Cc: linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-arm-kernel@...ts.infradead.org, linux-unisoc@...ts.infradead.org, 
 Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: [PATCH RESEND 14/14] gpio: ge: use new generic GPIO chip API

From: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>

Convert the driver to using the new generic GPIO chip interfaces from
linux/gpio/generic.h.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
---
 drivers/gpio/gpio-ge.c | 25 +++++++++++++++++++------
 1 file changed, 19 insertions(+), 6 deletions(-)

diff --git a/drivers/gpio/gpio-ge.c b/drivers/gpio/gpio-ge.c
index 5dc49648d8e378e9741213f9c2de05b4c75b347f..a02dd322e0d4cecd4564a71a550204983df33568 100644
--- a/drivers/gpio/gpio-ge.c
+++ b/drivers/gpio/gpio-ge.c
@@ -16,6 +16,7 @@
  */
 
 #include <linux/gpio/driver.h>
+#include <linux/gpio/generic.h>
 #include <linux/io.h>
 #include <linux/kernel.h>
 #include <linux/mod_devicetable.h>
@@ -51,24 +52,36 @@ MODULE_DEVICE_TABLE(of, gef_gpio_ids);
 
 static int __init gef_gpio_probe(struct platform_device *pdev)
 {
+	struct gpio_generic_chip_config config;
 	struct device *dev = &pdev->dev;
+	struct gpio_generic_chip *chip;
 	struct gpio_chip *gc;
 	void __iomem *regs;
 	int ret;
 
-	gc = devm_kzalloc(dev, sizeof(*gc), GFP_KERNEL);
-	if (!gc)
+	chip = devm_kzalloc(dev, sizeof(*chip), GFP_KERNEL);
+	if (!chip)
 		return -ENOMEM;
 
 	regs = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(regs))
 		return PTR_ERR(regs);
 
-	ret = bgpio_init(gc, dev, 4, regs + GEF_GPIO_IN, regs + GEF_GPIO_OUT,
-			 NULL, NULL, regs + GEF_GPIO_DIRECT,
-			 BGPIOF_BIG_ENDIAN_BYTE_ORDER);
+	config = (typeof(config)){
+		.dev = dev,
+		.sz = 4,
+		.dat = regs + GEF_GPIO_IN,
+		.set = regs + GEF_GPIO_OUT,
+		.dirin = regs + GEF_GPIO_DIRECT,
+		.flags = BGPIOF_BIG_ENDIAN_BYTE_ORDER,
+	};
+
+	ret = gpio_generic_chip_init(chip, &config);
 	if (ret)
-		return dev_err_probe(dev, ret, "bgpio_init failed\n");
+		return dev_err_probe(dev, ret,
+				     "failed to initialize the generic GPIO chip\n");
+
+	gc = &chip->gc;
 
 	/* Setup pointers to chip functions */
 	gc->label = devm_kasprintf(dev, GFP_KERNEL, "%pfw", dev_fwnode(dev));

-- 
2.48.1